Extended running and RPM's

Discussion in '2-Stroke Engines' started by gubba, Oct 13, 2008.

  1. gubba

    gubba New Member

    I am a new member and have a lot to learn about posting. I've already posted two times wrong. lol

    I installed my 80cc motor, everything is great, and I'm passed the break-in period.

    I intend to take several extended trips in the near future ranging from 75 mi. up to 300 miles. On these extended trips do I have to stop and cool off the motor?
    I have a bike specially equipped for the handicapped. I don't intend to do more than 20 or 25 miles per hour.

    What is the maximum " safe engine" RPM's for these motors?

    Hope I posted this properly, opinions are always welcome

  2. Pablo

    Pablo Motored Bikes Sponsor

    Opinions will vary, but I say if you are past the break in period and:

    a) your engine is well tuned and dialed in,
    b) you are using a good oil with a decent ratio (around 25:1 - 30:1) and
    c) have a good spark plug like an NGK B6HS,

    you can just keep on riding with no harm.
  3. Mountainman

    Mountainman Active Member

    ride that thing -- all day long

    wouldn't run it at all out(wide open) -- all day long
    don't think that you would do that

    I agree pretty much with Pablo
    I have seen some other posts that remind me of this one
    once an engine is warmed up
    the engine doesn't know how long it is running
    and it shouldn't matter
    as long as extrem heat -- or low oil -- is not a factor

    I run mine at 1/2 to full throttle
    all day long on many days...

    run it all day long if you want to
    ride that thing Mountainman
  4. HI,

    FWIW - I've had my Dax 70 up to 6400 RPM BRIEFLY then I got off the throttle because the engine sounded "loose" and I didn't want to blow it up....I would recommend more moderate RPM's obviously for sustained running.

    Hope this helps you.

  5. Maxx Ported

    Maxx Ported Member

    We cruise at 28-34mph all day long with a 32T sprocket 26" wheel

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    HERPER Member

    im very curious about this too, as the cooler air is coming in up here in new hampshire id be interested in taking one really long trip before the winter hits us full force.

    my ride at wot is usually around 30mph.. give or take. how could i amp up the mph without fullthrottle, if even possible.
  7. Skyliner70cc

    Skyliner70cc Active Member

    MY HT's run at full throttle almost the entire time but not when I'm going down a steep hill. No problem with engine not being able to tolerate it. No need to "rest" an engine..that's just plain silly.